Closes #2 Replacing all references to ZooKeeper with CuratorFramework where possible.
Merge pull request #110 from cjnolet/fluo-2

Closes #2 Replacing all references to ZooKeeper with CuratorFramework wh...
fixes #26 made lock recovery more efficient by caching and batching
Merge pull request #109 from keith-turner/fluo-26

fixes #26 made lock recovery more efficient by caching and batching
Closes #97 - Created Span class which is similiar to Accumulo's Range.
Changed underlying implementation to use Span except when interacting
with Accumulo. Created helper methods for converting between Range and
Span.